'Device' object has no attribute 'master' #31

New Issue

MrUnknownDE · 2026-04-05T16:21:15+02:00

MrUnknownDE commented

2026-04-05 16:21:15 +02:00

Originally created by @JMD-ONP on 4/1/2026

NetBox Edition

NetBox Community

NetBox Version

v4.5.6

Python Version

3.13

Steps to Reproduce

Create a device Stack01Member01
Create a Virtual Chassis Stack01
Assign the device Stack01Member01 to the Virtual Chassis Stack01, but do not set it as the master
Open the device Stack01Member01

Expected Behavior

While browsing devices, get all the details for each device.

Observed Behavior

On some devices (I don't know how many), I have this error since I upgraded to 4.5.6. I was using 4.5.5 previously. No error seen during upgrade.

<class 'AttributeError'>

'Device' object has no attribute 'master'

Others users (@krasotinpa and @vpanagos) added this point : it occurs on devices assembled in a virtual chassis.

*Originally created by @JMD-ONP on 4/1/2026* ### NetBox Edition NetBox Community ### NetBox Version v4.5.6 ### Python Version 3.13 ### Steps to Reproduce 1. Create a device Stack01Member01 2. Create a Virtual Chassis Stack01 3. Assign the device Stack01Member01 to the Virtual Chassis Stack01, but do not set it as the master 4. Open the device Stack01Member01 ### Expected Behavior While browsing devices, get all the details for each device. ### Observed Behavior On some devices (I don't know how many), I have this error since I upgraded to 4.5.6. I was using 4.5.5 previously. No error seen during upgrade. ``` <class 'AttributeError'> 'Device' object has no attribute 'master' ``` Others users (@krasotinpa and @vpanagos) added this point : it occurs on devices assembled in a virtual chassis.

MrUnknownDE closed this issue

2026-04-05 16:21:15 +02:00

MrUnknownDE added the status: accepted status: accepted status: accepted netbox type: bug netbox severity: medium netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox type: bug type: bug type: bug type: bug type: bug type: bug type: bug labels 2026-04-05 16:21:16 +02:00

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main

21455-sql-indexes-audit

21357-register-model-actions

feature

20924-plugin-ui-components

21766-improve-test-coverage-for-sortable-table-columns

21157-export-template-public-models

21025-pre-render-config-contexts

21364-swagger

feature-ip-prefix-link

20911-dropdown-3

fix_module_substitution

21160-filterset

20911-dropdown-2

20044-elevation-stuck-lightmode

7604-filter-modifiers-v3

20660-script-load

19724-graphql

14884-script

19720-macaddress-interface-generic-relation

fix-19669-api-image-download

7604-filter-modifiers

19275-fixes-interface-bulk-edit

fix-17794-get_field_value_return_list

11507-show-aggregate-and-rir-on-api

9583-add_column_specific_search_field_to_tables

No Label netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox severity: medium status: accepted status: accepted status: accepted type: bug type: bug type: bug type: bug type: bug type: bug type: bug type: bug

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Reference: github/netbox#31